Each of the kids have different dynamics with their parents that influences the way that they act with them.
Straga is always eager to help in some way. Despite their unnatural super strength, if he ever saw his mothers carrying something that looked like it would have been 'heavy' for a normal woman he always made sure to help them.
Thea, now that she was older, was trying to get her parents to see her as more of an adult. It had yet to work.
Gabbrielle brought them books to read and had even formed a little book club with some of the others. Sometimes they read works without smut… sometimes.
But among all of the children, Thrudd was the one who would prove the most troublesome to their current mission.
Because she was the one who sought their father's approval the most and liked being seen as the dependable and responsible child.
In laymen's terms? She was the snitch.
Like Apophis, but with tits.